September weather forecastArpin, WI
September
Weather in September
September, the first month of the autumn in Arpin, is still a pleasant month, with an average temperature fluctuating between 68.9°F (20.5°C) and 50°F (10°C).Temperature
In Arpin, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 76.1°F (24.5°C) to an agreeable 68.9°F (20.5°C). Arpin, in September, experiences an average temperature of 50°F (10°C) at night.Humidity
The average relative humidity in September is 80%.Rainfall
In Arpin, Wisconsin, during September, the rain falls for 12.4 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Arpin, during the entire year, the rain falls for 138.3 days and collects up to 25.12" (638mm) of precipitation.Snowfall
In Arpin, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:23 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:42 pm CDT.
Sunshine
In Arpin, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arpin, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Arpin, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Arpin, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Arpin, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Arpin, WI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Arpin, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Arpin, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Arpin, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arpin, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Arpin, WI
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Arpin, WI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Arpin, WI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Arpin, WI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
